/*
 * Copyright (c) 2005-2010 Flamingo Kirill Grouchnikov. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of Flamingo Kirill Grouchnikov nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package org.pushingpixels.flamingo.internal.ui.ribbon.appmenu;

import java.awt.*;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.beans.PropertyChangeEvent;
import java.text.AttributedString;
import java.util.ArrayList;

import javax.swing.JSeparator;

import org.pushingpixels.flamingo.api.common.*;
import org.pushingpixels.flamingo.api.common.icon.ResizableIcon;
import org.pushingpixels.flamingo.internal.utils.FlamingoUtilities;

public class CommandButtonLayoutManagerMenuTileLevel2 implements
		CommandButtonLayoutManager {

	@Override
	public int getPreferredIconSize() {
		return 32;
	}

	@Override
	public Dimension getPreferredSize(AbstractCommandButton commandButton) {
		Insets borderInsets = commandButton.getInsets();
		int bx = borderInsets.left + borderInsets.right;
		int by = borderInsets.top + borderInsets.bottom;
		FontMetrics fm = commandButton.getFontMetrics(commandButton.getFont());
		JSeparator jsep = new JSeparator(JSeparator.VERTICAL);

		int titleWidth = fm.stringWidth(commandButton.getText());
		int layoutHGap = 2 * FlamingoUtilities.getHLayoutGap(commandButton);
		int layoutVGap = 2 * FlamingoUtilities.getVLayoutGap(commandButton);
		int widthMed = this.getPreferredIconSize()
				+ 2
				* layoutHGap
				+ jsep.getPreferredSize().width
				+ titleWidth
				+ (FlamingoUtilities.hasPopupAction(commandButton) ? 1
						+ fm.getHeight() / 2 + 4 * layoutHGap
						+ jsep.getPreferredSize().width : 0);

		// height - three lines of text and two gaps between them.
		// The gap between the lines is half the main gap.
		int fontHeight = fm.getAscent() + fm.getDescent();
		int textHeight = fontHeight + layoutVGap;
		String extraText = commandButton.getExtraText();
		if ((extraText != null) && (extraText.length() > 0)) {
			textHeight += 2 * fontHeight;
		}
		return new Dimension(bx + widthMed, by
				+ Math.max(this.getPreferredIconSize(), textHeight));
	}

	@Override
	public void propertyChange(PropertyChangeEvent evt) {
	}

	@Override
	public Point getKeyTipAnchorCenterPoint(AbstractCommandButton commandButton) {
		Insets ins = commandButton.getInsets();
		int height = commandButton.getHeight();
		ResizableIcon buttonIcon = commandButton.getIcon();
		// bottom-right corner of the icon area
		return new Point(ins.left + buttonIcon.getIconWidth(),
				(height + buttonIcon.getIconHeight()) / 2);
	}

	@Override
	public CommandButtonLayoutInfo getLayoutInfo(
			AbstractCommandButton commandButton, Graphics g) {
		CommandButtonLayoutInfo result = new CommandButtonLayoutInfo();

		result.actionClickArea = new Rectangle(0, 0, 0, 0);
		result.popupClickArea = new Rectangle(0, 0, 0, 0);

		Insets ins = commandButton.getInsets();

		result.iconRect = new Rectangle();
		result.popupActionRect = new Rectangle();

		int width = commandButton.getWidth();
		int height = commandButton.getHeight();

		FontMetrics fm = g.getFontMetrics();
		int labelHeight = fm.getAscent() + fm.getDescent();

		JCommandButton.CommandButtonKind buttonKind = (commandButton instanceof JCommandButton) ? ((JCommandButton) commandButton)
				.getCommandButtonKind()
				: JCommandButton.CommandButtonKind.ACTION_ONLY;

		if (buttonKind == JCommandButton.CommandButtonKind.ACTION_ONLY) {
			result.actionClickArea.x = 0;
			result.actionClickArea.y = 0;
			result.actionClickArea.width = width;
			result.actionClickArea.height = height;
			result.isTextInActionArea = true;
		}
		if (buttonKind == JCommandButton.CommandButtonKind.POPUP_ONLY) {
			result.popupClickArea.x = 0;
			result.popupClickArea.y = 0;
			result.popupClickArea.width = width;
			result.popupClickArea.height = height;
			result.isTextInActionArea = false;
		}

		JSeparator jsep = new JSeparator(JSeparator.VERTICAL);
		int layoutHGap = 2 * FlamingoUtilities.getHLayoutGap(commandButton);
		int layoutVGap = 2 * FlamingoUtilities.getVLayoutGap(commandButton);

		ResizableIcon buttonIcon = commandButton.getIcon();
		boolean ltr = commandButton.getComponentOrientation().isLeftToRight();

		if (ltr) {
			int x = ins.left;
			// medium icon, 1-line text, 1-line extra text and action arrow
			if (buttonIcon != null) {
				result.iconRect.x = x;
				result.iconRect.y = ins.top + layoutVGap;
				result.iconRect.width = buttonIcon.getIconWidth();
				result.iconRect.height = buttonIcon.getIconHeight();

				x += buttonIcon.getIconWidth();
			}
			if (buttonKind == JCommandButton.CommandButtonKind.ACTION_AND_POPUP_MAIN_POPUP) {
				result.actionClickArea.x = 0;
				result.actionClickArea.y = 0;
				result.actionClickArea.width = x + layoutHGap;
				result.actionClickArea.height = height;

				result.popupClickArea.x = x + layoutHGap;
				result.popupClickArea.y = 0;
				result.popupClickArea.width = width - x - layoutHGap;
				result.popupClickArea.height = height;

				result.separatorOrientation = CommandButtonSeparatorOrientation.VERTICAL;
				result.separatorArea = new Rectangle();
				result.separatorArea.x = x + layoutHGap;
				result.separatorArea.y = 0;
				result.separatorArea.width = new JSeparator(JSeparator.VERTICAL)
						.getPreferredSize().width;
				result.separatorArea.height = height;

				result.isTextInActionArea = false;
			}
			x += 2 * layoutHGap + jsep.getPreferredSize().width;

			TextLayoutInfo lineLayoutInfo = new TextLayoutInfo();
			lineLayoutInfo.text = commandButton.getText();
			lineLayoutInfo.textRect = new Rectangle();

			lineLayoutInfo.textRect.x = x;
			lineLayoutInfo.textRect.y = ins.top + layoutVGap / 2;
			lineLayoutInfo.textRect.width = fm.stringWidth(commandButton
					.getText());
			lineLayoutInfo.textRect.height = labelHeight;

			result.textLayoutInfoList = new ArrayList<TextLayoutInfo>();
			result.textLayoutInfoList.add(lineLayoutInfo);

			String extraText = commandButton.getExtraText();
			if ((extraText == null) || (extraText.length() == 0)) {
				lineLayoutInfo.textRect.y = (height - labelHeight) / 2;
			} else {
				AttributedString attributedDescription = new AttributedString(
						commandButton.getExtraText());
				attributedDescription.addAttribute(TextAttribute.FONT,
						g.getFont());
				LineBreakMeasurer lineBreakMeasurer = new LineBreakMeasurer(
						attributedDescription.getIterator(),
						((Graphics2D) g).getFontRenderContext());
				// The max width of the extra text line - need to leave
				// space for the popup arrow icon
				int maxFirstExtraLineWidth = width - x - ins.right - layoutHGap
						- labelHeight;
				int breakIndex = lineBreakMeasurer
						.nextOffset(maxFirstExtraLineWidth);

				TextLayoutInfo extraLineLayoutInfo1 = new TextLayoutInfo();
				extraLineLayoutInfo1.text = commandButton.getExtraText()
						.substring(0, breakIndex);
				extraLineLayoutInfo1.textRect = new Rectangle();

				extraLineLayoutInfo1.textRect.x = x;
				extraLineLayoutInfo1.textRect.y = ins.top + layoutVGap
						+ labelHeight;
				extraLineLayoutInfo1.textRect.width = fm
						.stringWidth(extraLineLayoutInfo1.text);
				extraLineLayoutInfo1.textRect.height = labelHeight;

				TextLayoutInfo extraLineLayoutInfo2 = new TextLayoutInfo();
				extraLineLayoutInfo2.text = commandButton.getExtraText()
						.substring(breakIndex);
				extraLineLayoutInfo2.textRect = new Rectangle();

				extraLineLayoutInfo2.textRect.x = x;
				extraLineLayoutInfo2.textRect.y = ins.top + layoutVGap + 2
						* labelHeight;
				extraLineLayoutInfo2.textRect.width = fm
						.stringWidth(extraLineLayoutInfo2.text);
				extraLineLayoutInfo2.textRect.height = labelHeight;

				result.extraTextLayoutInfoList = new ArrayList<TextLayoutInfo>();
				result.extraTextLayoutInfoList.add(extraLineLayoutInfo1);
				result.extraTextLayoutInfoList.add(extraLineLayoutInfo2);
			}

			x += fm.getStringBounds(commandButton.getText(), g).getWidth();
			if (buttonKind == JCommandButton.CommandButtonKind.ACTION_AND_POPUP_MAIN_ACTION) {
				// popup click areas are right aligned
				result.actionClickArea.x = 0;
				result.actionClickArea.y = 0;
				result.actionClickArea.width = width - ins.right - labelHeight;
				result.actionClickArea.height = height;

				result.popupClickArea.x = width - ins.right - labelHeight;
				result.popupClickArea.y = 0;
				result.popupClickArea.width = labelHeight + ins.right;
				result.popupClickArea.height = height;

				result.separatorOrientation = CommandButtonSeparatorOrientation.VERTICAL;
				result.separatorArea = new Rectangle();
				result.separatorArea.x = width - ins.right - labelHeight;
				result.separatorArea.y = 0;
				result.separatorArea.width = new JSeparator(JSeparator.VERTICAL)
						.getPreferredSize().width;
				result.separatorArea.height = height;
				result.isTextInActionArea = true;
			}

			if (FlamingoUtilities.hasPopupAction(commandButton)) {
				result.popupActionRect.x = width - ins.right - labelHeight * 3
						/ 4;
				result.popupActionRect.y = (height - labelHeight) / 2 - 1;
				result.popupActionRect.width = 1 + labelHeight / 2;
				result.popupActionRect.height = labelHeight + 2;
			}
		} else {
			int x = commandButton.getWidth() - ins.right;
			// medium icon, 1-line text, 1-line extra text and action arrow
			if (buttonIcon != null) {
				result.iconRect.x = x - buttonIcon.getIconWidth();
				result.iconRect.y = ins.top + layoutVGap;
				result.iconRect.width = buttonIcon.getIconWidth();
				result.iconRect.height = buttonIcon.getIconHeight();

				x -= buttonIcon.getIconWidth();
			}
			if (buttonKind == JCommandButton.CommandButtonKind.ACTION_AND_POPUP_MAIN_POPUP) {
				result.actionClickArea.x = x + layoutHGap;
				result.actionClickArea.y = 0;
				result.actionClickArea.width = width - x - layoutHGap;
				result.actionClickArea.height = height;

				result.popupClickArea.x = 0;
				result.popupClickArea.y = 0;
				result.popupClickArea.width = x + layoutHGap;
				result.popupClickArea.height = height;

				result.separatorOrientation = CommandButtonSeparatorOrientation.VERTICAL;
				result.separatorArea = new Rectangle();
				result.separatorArea.x = x + layoutHGap;
				result.separatorArea.y = 0;
				result.separatorArea.width = new JSeparator(JSeparator.VERTICAL)
						.getPreferredSize().width;
				result.separatorArea.height = height;

				result.isTextInActionArea = false;
			}
			x -= (2 * layoutHGap + jsep.getPreferredSize().width);

			TextLayoutInfo lineLayoutInfo = new TextLayoutInfo();
			lineLayoutInfo.text = commandButton.getText();
			lineLayoutInfo.textRect = new Rectangle();

			lineLayoutInfo.textRect.width = fm.stringWidth(commandButton
					.getText());
			lineLayoutInfo.textRect.x = x - lineLayoutInfo.textRect.width;
			lineLayoutInfo.textRect.y = ins.top + layoutVGap / 2;
			lineLayoutInfo.textRect.height = labelHeight;

			result.textLayoutInfoList = new ArrayList<TextLayoutInfo>();
			result.textLayoutInfoList.add(lineLayoutInfo);

			String extraText = commandButton.getExtraText();
			if ((extraText == null) || (extraText.length() == 0)) {
				lineLayoutInfo.textRect.y = (height - labelHeight) / 2;
			} else {
				AttributedString attributedDescription = new AttributedString(
						commandButton.getExtraText());
				attributedDescription.addAttribute(TextAttribute.FONT,
						g.getFont());
				LineBreakMeasurer lineBreakMeasurer = new LineBreakMeasurer(
						attributedDescription.getIterator(),
						((Graphics2D) g).getFontRenderContext());
				// The max width of the extra text line - need to leave
				// space for the popup arrow icon
				int maxFirstExtraLineWidth = x - ins.left - layoutHGap
						- labelHeight;
				int breakIndex = lineBreakMeasurer
						.nextOffset(maxFirstExtraLineWidth);

				TextLayoutInfo extraLineLayoutInfo1 = new TextLayoutInfo();
				extraLineLayoutInfo1.text = commandButton.getExtraText()
						.substring(0, breakIndex);
				extraLineLayoutInfo1.textRect = new Rectangle();

				extraLineLayoutInfo1.textRect.width = fm
						.stringWidth(extraLineLayoutInfo1.text);
				extraLineLayoutInfo1.textRect.x = x
						- extraLineLayoutInfo1.textRect.width;
				extraLineLayoutInfo1.textRect.y = ins.top + layoutVGap
						+ labelHeight;
				extraLineLayoutInfo1.textRect.height = labelHeight;

				TextLayoutInfo extraLineLayoutInfo2 = new TextLayoutInfo();
				extraLineLayoutInfo2.text = commandButton.getExtraText()
						.substring(breakIndex);
				extraLineLayoutInfo2.textRect = new Rectangle();

				extraLineLayoutInfo2.textRect.width = fm
						.stringWidth(extraLineLayoutInfo2.text);
				extraLineLayoutInfo2.textRect.x = x
						- extraLineLayoutInfo2.textRect.width;
				extraLineLayoutInfo2.textRect.y = ins.top + layoutVGap + 2
						* labelHeight;
				extraLineLayoutInfo2.textRect.height = labelHeight;

				result.extraTextLayoutInfoList = new ArrayList<TextLayoutInfo>();
				result.extraTextLayoutInfoList.add(extraLineLayoutInfo1);
				result.extraTextLayoutInfoList.add(extraLineLayoutInfo2);
			}

			if (buttonKind == JCommandButton.CommandButtonKind.ACTION_AND_POPUP_MAIN_ACTION) {
				// popup click areas are left aligned
				result.actionClickArea.x = labelHeight + ins.left;
				result.actionClickArea.y = 0;
				result.actionClickArea.width = width - ins.right - labelHeight;
				result.actionClickArea.height = height;

				result.popupClickArea.x = 0;
				result.popupClickArea.y = 0;
				result.popupClickArea.width = ins.left + labelHeight;
				result.popupClickArea.height = height;

				result.separatorOrientation = CommandButtonSeparatorOrientation.VERTICAL;
				result.separatorArea = new Rectangle();
				result.separatorArea.x = labelHeight + ins.left;
				result.separatorArea.y = 0;
				result.separatorArea.width = new JSeparator(JSeparator.VERTICAL)
						.getPreferredSize().width;
				result.separatorArea.height = height;

				result.isTextInActionArea = true;
			}

			if (FlamingoUtilities.hasPopupAction(commandButton)) {
				result.popupActionRect.x = ins.left + labelHeight / 4;
				result.popupActionRect.y = (height - labelHeight) / 2 - 1;
				result.popupActionRect.width = 1 + labelHeight / 2;
				result.popupActionRect.height = labelHeight + 2;
			}
		}
		return result;
	}
}
